Carrier 50RTP03-20 specifications Ecr

BC	— Blower Contactor
CB	— Circuit Breaker

Complete C

a50-8553

LEGEND
Field Line Voltage Wiring	Ground

Field Low Voltage Wiring

CO — Sensor, Condensate Overflow

Printed Circuit Trace

Solenoid Coil

ECR	— Enthalpy Control Relay
FP1	— Sensor, Water Coil Freeze Protection
FP2	— Sensor, Air Coil Freeze Protection
GFI	— Ground Fault Interrupter
HP	— High-Pressure Switch
JW3	— Clippable Field Selection Jumper
LAR	— Low Ambient Relay
LOC	— Loss of Charge Pressure Switch
MAS	— Mixed Air Sensor
OAT	— Outdoor Air Thermostat
PDB	— Power Distribution Block
RVS	— Reversing Valve Solenoid
TB	— Terminal Block

TRANS — Transformer

Factory Line Voltage Wiring

Factory Low Voltage Wiring

Optional Wiring

Relay/Contactor Coil

Thermistor

Condensate Pan

Circuit Breaker

Relay Contacts - N.O.

Relay Contacts - N.C.

Temperature Switch

Switch - Low Pressure

Switch - High Pressure

Wire Nut

NOTES:

1.Compressor and blower motor thermally protected internally.

2.All wiring to the unit must comply with NEC (National Electrical Code) and local codes.

3.208/230-v transformers will be connected for 208-v operation. For 230-v operation, disconnect RED lead at L1, and attach ORG lead to L1. Close open end of RED lead.

4.FPI thermistor provides freeze protection for WATER. When using ANTIFREEZE solutions, cut JW3 jumper.

5.Typical heat pump thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. Thermostat wiring must be “Class 1” and voltage rating equal to or greater than unit supply voltage.

6.Factory cut JW1 jumper and dry contact will be available between AL1 and AL2.

7.Transformer secondary ground via Complete C board standoffs and screws to control box. (Ground available from top two stand- offs as shown.)

Fig. 6 — 50RTP03-06 Units — Typical Control Wiring with Complete C Control

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